Change module GenerateKeyfile to more versatile GenerateKey, which doesnt have to output to a file

GCryptCLI/src/ModuleGenerateKey.cpp

@@ -0,0 +1,15 @@
+#include "ModuleGenerateKey.h"
+
+#include "KeyManager.h"
+#include "CommandlineInterface.h"
+
+using namespace Leonetienne::GCrypt;
+using namespace Module;
+
+void GenerateKey::Run() {
+
+  // Pass KeyManager::GetKey() to data output layer
+
+  return;
+}
+